100021010000120 has 128 divisors (see below), whose sum is σ = 251963520238080. Its totient is φ = 35426967744000.

The previous prime is 100021010000089. The next prime is 100021010000159. The reversal of 100021010000120 is 21000010120001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 100021010000098 and 100021010000107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16694411 + ... + 21880250.

It is an arithmetic number, because the mean of its divisors is an integer number (1968465001860).

Almost surely, 2^{100021010000120} is an apocalyptic number.

100021010000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021010000120 is an abundant number, since it is smaller than the sum of its proper divisors (151942510237960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100021010000120 is a wasteful number, since it uses less digits than its factorization.

100021010000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38574837 (or 38574833 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100021010000120 its reverse (21000010120001), we get a palindrome (121021020120121).

The spelling of 100021010000120 in words is "one hundred trillion, twenty-one billion, ten million, one hundred twenty", and thus it is an aban number.